A key to the ferns of Pennsylvania. Includes a non-technical key for investigation of each of the fifty-nine species found in the state; directions for use of the key; an outline for aid in identification of ferns by sterile fronds alone; distribution of species through the state; and a list of ferns found in the vicinity of Johnstown, Cambria County.
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
[Lancaster, Pa.,
Science Press]
1946.
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3rd Floor Main Library
| Call Number: |
A1234.567 |
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| Copy 1 | Available |